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Parallel port

In computing, a parallel port is a type of interface found on early computers (personal and otherwise) for connecting peripherals. The name refers to the way the data is sent; parallel ports send multiple bits of data at once (parallel communication), as opposed to serial communication, in which bits are sent one at a time. To do this, parallel ports…

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Bitrate
PP: 150 kB/s, EPP: 2 MB/s ECP: 2.5 MB/s
Cable
Usually up to 25 wires including ground; optionally shielded
Connector
DB-25, DB25F, "Centronics" 36-pin Amphenol, DC-37, others
Data signal
Parallel
Designed
1970–1981
Designer
Centronics, IBM

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Historical uses

Notable consumer products

Current use

IBM PC implementation

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Parallel port

Nodes124
Edges123
Triples201
Avg. degree1.98
Density0.016129
Components1

How this topic connects Entity context

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Parallel port

Top relations

related to Access · 29
Parallel port → AUTOEXEC, BAT, BIOS, CONFIG, CP/M, DEC, DOS, DOS-based, DR-DOS, For, In DOS, ITS, Line Print Terminal, Line Printer, Local Print Terminal, LPT, LPT1, LPT2, LPT3, LPT4
related to EPP and ECP · 19
Parallel port → All, Bi-Tronics, BUSY, Centronics, ECP, EPP, IBM, IBM's, IEEE, In, ISA, MB/s, Mbps, The, The Enhanced Parallel Port, The Extended Capability Port, This, Two, Zenith Electronics
related to Pinouts · 17
Parallel port → ACK, Busy, Enhanced Parallel Ports, EPPs, Error, Initialize, It, Its, KB/s, Linefeed, MB/s, Newer, Paper Out, Select, Select In, Strobe, The
related to Centronics · 15
Parallel port → Amphenol, An Wang, ASCII, Centronics, In, On, Prentice Robinson, Robert Howard, The, This, To, Wang, Wang Laboratories, When, While
related to External links · 15
Parallel port → API, Archived, BeyondLogic, Developing Parallel Device Drivers, ECP, EPP, HOWTOThe Linux, I/O, Parallel Port Subsystem Archived, PC's, Python, Roadmap, Wayback Machinelibieee1284, Wayback MachineParallel Port, Windows NT/2000/XP Parallel
related to Dataproducts · 13
Parallel port → Dataproducts, DB50, DC-37, DD-50, However, It, M-50, Most, PC, Printers, The Dataproducts, Winchester, Zip
related to Port addresses · 13
Parallel port → Assigning, BDA, BIOS, BIOS Data Area, For, Hercules, If, LPT1 DOS, MDA, The, The IRQ, Therefore, Traditionally IBM PC
related to Program interface · 13
Parallel port → Access, DOS, FreeBSD, In, Linux, NetBSD, On Linux, Solaris, The, This, Unix, Windows, Windows NT
related to Historical uses · 11
Parallel port → Adapters, Before, CD, EPROM, MP3, One, Other, SCSI, Some, USB, Zip
related to Current use · 10
Parallel port → For, Many, PCI, PCI-express, Smaller, There, USB, USB-only, USB-to-EPP, USB-to-parallel

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Important terminology

port parallel printer data interface ibm ports used also devices centronics host printers could pins computers systems connector pc using

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Parallel portBitratePP: 150 kB/s, EPP: 2 MB/s ECP: 2.5 MB/s1.00infobox
Parallel portCableUsually up to 25 wires including ground; optionally shielded1.00infobox
Parallel portConnectorDB-25, DB25F, "Centronics" 36-pin Amphenol, DC-37, others1.00infobox
Parallel portData signalParallel1.00infobox
Parallel portDesigned1970–19811.00infobox
Parallel portDesignerCentronics, IBM1.00infobox
Parallel portEarthDedicated pins1.00infobox
Parallel portExternalYes1.00infobox
Parallel portHot pluggableUsually not1.00infobox
Parallel portLength2.3 cm (0.91 in)1.00infobox
Parallel portManufacturerCentronics, Dataproducts, Intel, IBM, Compaq, Nortel, etc1.00infobox
Parallel portMax. devices2, unless devices provide passthrough1.00infobox
Parallel portMax. voltage5 volts DC1.00infobox
Parallel portPins8 data, 4 output control, 5 input control, 8 ground1.00infobox
Parallel portProtocolApplication dependent1.00infobox
Parallel portSignal0 to +5.0 volt DC1.00infobox
Parallel portTypePoint-to-point1.00infobox
Parallel portWidthVariable1.00infobox
Parallel portis atype of interface found on early computers0.90text

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